Irregular Past Tense (Intermediate) Intermediate List (PDF) List 1 Base to Past Past to Base Mixed Base to Past Past to Base Mixed List 2 Base to Past Past to Base Mixed Base to Past Past to Base Mixed Base to Past Past to Base Mixed Base to Past Past to Base Mixed List 3 Base to Past Past to Base Mixed Base to Past Past to Base Mixed Base to Past Past to Base Mixed Base to Past Past to Base Mixed List 4 Base to Past Past to Base Mixed Base to Past Past to Base Mixed Base to Past Past to Base Mixed Base to Past Past to Base Mixed